Becker muscular dystrophy

Beck·er mus·cu·lar dys·tro·phy

, Becker-type tardive muscular dystrophy (bek'ĕr),

a hereditary muscle disorder of late onset, usually in the second or third decade, affecting the proximal muscles with characteristic pseudohypertrophy of the calves; clinical features similar to Duchenne muscular dystrophy but much milder and not a genetic lethal; X-linked recessive inheritance, with both Becker and Duchenne dystrophies caused by mutation in the dystrophin gene on Xp. Compare: Duchenne dystrophy.

Becker muscular dystrophy

(bĕk′ər)

n.

A form of muscular dystrophy that begins in late childhood or adolescence, almost exclusively affects males, and is characterized by progressive weakening of the muscles that is similar to but less severe than in Duchenne muscular dystrophy. It is caused by a recessive genetic mutation on the X chromosome that results in insufficiency or abnormality of the protein dystrophin in muscle cells.

Beck·er mus·cu·lar dys·tro·phy

A hereditary muscle disorder of late onset, usually in the second or third decade, affecting the proximal muscles with characteristic pseudohypertrophy of the calves; clinical features similar to Duchenne muscular dystrophy but much milder and not a genetic lethal; X-linked recessive inheritance, with both Becker and Duchenne dystrophies caused by mutation in the dystrophin gene on Xp. Compare: Duchenne dystrophy

Becker muscular dystrophy (BMD)

A type of muscular dystrophy that affects older boys and men, and usually follows a milder course than DMD.

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